Topic
Ruby laser
About: Ruby laser is a research topic. Over the lifetime, 2474 publications have been published within this topic receiving 38933 citations. The topic is also known as: corundum laser & ruby rod.
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TL;DR: The quality of the holograms is demonstrated by the reconstructed images taken of laser produced cavitation bubbles following optical breakdown in water.
Abstract: Four holograms are recorded superimposed on the same plate at maximum repetition rates of about 10 kHz. A multiply Q-switched ruby laser produces the series of coherent light pulses for hologram exposure. Image separation of different holograms is achieved by spatial frequency multiplexing. The reference beam direction is altered by a unique acoustooptic beam splitter and deflector unit. The operating principle is a sound pulse-light pulse interception technique. Only one ultrasonic transducer is necessary. The quality of the holograms is demonstrated by the reconstructed images taken of laser produced cavitation bubbles following optical breakdown in water.
15 citations
TL;DR: In the initial stage of removing the traumatic tattoo, the ablative fractional laser treatment appeared to be as effective as the standard ruby Laser therapy, however, from the 6th treatment onward, the ruby laser therapy was more effective.
Abstract: Background and objective: Q-switched laser treatments are considered the standard method for removing both regular and traumatic tattoos Recently, the removal of tattoo ink using ablative fractional lasers has been reported Ablative fractional CO2 laser and q-switched ruby laser treatments were used in a split-face mode to compare the safety and efficacy of the two types of laser in removing a traumatic tattoo caused by the explosion of a firework Study design/Patients and methods: A male patient suffering from a traumatic tattoo due to explosive deposits in his entire face was subjected to therapy A series of eleven treatments were performed The right side of the face was always treated using an ablative fractional CO2 laser, whereas the left side was treated only using a q-switched ruby laser Results: After a series of eleven treatments, the patient demonstrated a significant lightening on both sides of his traumatic tattoo, with no clinical difference After the first six treatments, the
15 citations
Journal Article•
TL;DR: In this study, iridotomies in rhesus monkeys were produced with a single exposure to a Q-switched ruby laser pulse, showing evidence of a nonlinear laser-iris interaction.
Abstract: Laser iridotomies have been pursued as a means of performing anterior segments surgery as a virtually noninvasive procedure. An ideal single laser pulse technique has been elusive. In this study, iridotomies in rhesus monkeys were produced, with a single exposure to a Q-switched. ruby laser pulse. The iridotomy formation was accompanied by acoustic wave generation, bubble formation, and explosive tissue disruption, evidence of a nonlinear laser-iris interaction. The average energies at which these iridotomies were produced ranged between 18 and 48 mj, some of the lowest energies reported for a laser iridotomy. Corneal changes were observed both at the epithelium and at the endothelium in some, but not all, of the eyes exposed. The epithelial changes morphologically resembled, nonlinear damage reported for transparent solids. Damage to physical materials has been attributed to stimulated. Brillouin scattering, a mechanism that may also play a role at the cornea. Consideration of such phenomena should be a part of the clinical evaluation prior to exposure of a cornea to high-power laser pulses. Although the endothelial change was more difficult to analyze, a shock-wave effect could not be discounted.
15 citations
TL;DR: A replica technique and electron microscopy have been applied to the study of ruby laser damage on germanium surfaces as discussed by the authors, where the damage produced at very low laser energies far from t
Abstract: A replica technique and electron microscopy have been applied to the study of ruby laser damage on germanium surfaces Studies were made of the damage produced at very low laser energies far from t
15 citations
TL;DR: In this paper, the results of small-angle ruby-laser Thomson-scattering measurements of the parametric excitation of plasma waves by C${O}}_{2}$laser radiation at quarter-critical density in a laser-heated gas-target plasma were reported.
Abstract: We report the results of small-angle ruby-laser Thomson-scattering measurements of the parametric excitation of plasma waves by C${\mathrm{O}}_{2}$-laser radiation at quarter-critical density in a laser-heated gas-target plasma. From supplementary data obtained from interferometry and large-angle ruby-laser scattering we infer that the threshold conditions for a convective decay are satisfied.
14 citations